Read some more about Eunomia. This is an ill-conceived idea and I'm confident in predicting it will not work.
Algorithmically capturing trust is doomed to fail. We don't even know how to properly define trust. You can guarantee this is going to be gamed. Throwing "big data" and "blockchain" in there doesn't matter at all. Those are words that get you funding.
A bunch of technomancers in the fediverse. Keep it fairly clean please. This arcology is for all who wash up upon it's digital shore.